Global Patent Index - EP 0600924 B1

EP 0600924 B1 19960228 - DEVICE FOR EXTRUDING THERMOPLASTIC MATERIAL

Title (en)

DEVICE FOR EXTRUDING THERMOPLASTIC MATERIAL

Title (de)

VORRICHTUNG ZUM EXTRUDIEREN VON THERMOPLASTISCHEM KUNSTSTOFFGUT

Title (fr)

DISPOSITIF POUR L'EXTRUSION DE PRODUITS THERMOPLASTIQUES

Publication

EP 0600924 B1 19960228 (DE)

Application

EP 92916113 A 19920806

Priority

  • AT 170991 A 19910829
  • AT 9200110 W 19920806

Abstract (en)

[origin: WO9304841A1] A device for extruding thermoplastic material has an extruder housing (1) in which an extrusion worm (2) operated by a drive system is fitted so as to rotate about its axis. The extruder housing is divided into two chambers (8, 9) by a return thread (7) sealing the circumference of the worm against the housing wall. One chamber (8) has an inlet (3) for the material to be extruded and the other (9) has an outlet (5) and outgassing apertures (17) at an axial distance therefrom. Both chambers are interconnected by at least one channel (11) in which is fitted a melt filter (14). Viewed in the direction of flow of the plastic material to be processed, the outgassing apertures (17) are at a distance from the openings (16') of the channels (11) into the chamber (9). In this region the extruder worm (2) thread is shaped to form a pressureless region (18) so that the filtered plastic material is given the time to outgas. This favours outgassing.

IPC 1-7

B29C 47/76

IPC 8 full level

B29C 48/76 (2019.01); B29C 48/355 (2019.01); B29C 48/55 (2019.01); B29C 48/67 (2019.01); B29C 48/69 (2019.01); B29C 48/74 (2019.01); B29C 48/03 (2019.01); B29C 48/693 (2019.01)

CPC (source: EP US)

B29B 7/421 (2013.01 - EP); B29B 7/429 (2013.01 - EP); B29B 7/58 (2013.01 - EP); B29B 7/845 (2013.01 - EP); B29C 48/268 (2019.01 - EP US); B29C 48/55 (2019.01 - EP US); B29C 48/69 (2019.01 - EP US); B29C 48/6945 (2019.01 - EP US); B29C 48/745 (2019.01 - EP US); B29C 48/76 (2019.01 - EP US); B29C 48/03 (2019.01 - EP US); B29C 48/273 (2019.01 - EP US); B29C 48/693 (2019.01 - EP US); B29K 2105/26 (2013.01 - EP US)

Designated contracting state (EPC)

AT BE CH DE DK ES FR GB IT LI LU NL SE

DOCDB simple family (publication)

WO 9304841 A1 19930318; AT E134563 T1 19960315; AU 2384592 A 19930405; AU 664564 B2 19951123; BR 9206425 A 19951107; CA 2116659 A1 19930318; CA 2116659 C 19951114; DE 59205518 D1 19960404; DK 0600924 T3 19960722; EP 0600924 A1 19940615; EP 0600924 B1 19960228; ES 2086760 T3 19960701; JP 2583823 B2 19970219; JP H06506413 A 19940721; KR 0131010 B1 19980413; MX 9204979 A 19930430; TW 210975 B 19930811; US 5419634 A 19950530; ZA 926169 B 19930303

DOCDB simple family (application)

AT 9200110 W 19920806; AT 92916113 T 19920806; AU 2384592 A 19920806; BR 9206425 A 19920806; CA 2116659 A 19920806; DE 59205518 T 19920806; DK 92916113 T 19920806; EP 92916113 A 19920806; ES 92916113 T 19920806; JP 50474093 A 19920806; KR 19940070657 A 19940228; MX 9204979 A 19920828; TW 81107115 A 19920909; US 19913694 A 19940225; ZA 926169 A 19920817